Window covering

Abstract

A window covering includes a headrail, a bottom rail, a shading member, two pulley assemblies, and a cord. The shading member is between the headrail and the bottom rail. The pulley assemblies are received in the headrail, each of which has a frame and a pulley. The frame has an opening, and the pulley is connected to the frame. The cord is a woven Y-shaped cord, having a control section and two lift sections. The cord runs over the pulleys of the pulley assemblies, the control section extends out of the headrail to be operated by a user, and the lift sections extend out of the frames via the openings respectively to connect to the bottom rail through the shading member.

What is claimed is: 
     
       1. A window covering, comprising:
 a headrail; 
 a bottom rail; 
 a shading member between the headrail and the bottom rail; 
 two pulley assemblies received in the headrail, each of which has a frame and a pulley, wherein the frame has an opening, and the pulley is connected to the frame; and 
 a cord having a control section and two lift sections, wherein the cord runs over the pulleys of the pulley assemblies, the control section extends out of the headrail to be operated by a user, and the lift sections extend out of the frames via the openings respectively to connect to the bottom rail through the shading member; 
 wherein the frame of the pulley assembly has a room and two first locking slots on top and bottom walls of the room; the pulley has a protrusion around a circumference thereof to divide the circumference into two carrier portions; and the pulley is received in the room, and the protrusion engages the first locking slots. 
 
     
     
       2. The window covering of  claim 1 , wherein the cord is a woven Y-shaped cord having a trunk section and two branch sections; and the control section is on the trunk section, and the lift sections are on the branch sections respectively. 
     
     
       3. The window covering of  claim 1 , wherein the carrier portion of the pulley slopes downwards from an edge of the circumference to the protrusion. 
     
     
       4. The window covering of  claim 1 , wherein the pulley further has two flanges around the circumference; and the protrusion is between the flanges. 
     
     
       5. The window covering of  claim 1 , wherein the frame of the pulley assembly further has two second locking slots on the sidewall of the room; an axle, which is connected to the pulley, having opposite ends engaging the second locking slots respectively. 
     
     
       6. The window covering of  claim 5 , wherein the second locking slot of the frame has an open end and a closed end; a width at the open end is wider than that at the closed end; the axle engages the second locking slot via the open end and stops at the closed end. 
     
     
       7. The window covering of  claim 6 , wherein the second locking slot has a round portion at the close end to receive the axle therein. 
     
     
       8. The window covering of  claim 1 , wherein the control section and the lift sections are flat. 
     
     
       9. The window covering of  claim 1 , further comprising a tilting assembly and at least a ladder, wherein the tilting assembly has a driving device, at least a fixing device, and a shaft; the fixing device is provided on the frame of the pulley assembly; the fixing device and the driving device are connected to the shaft; and the ladder passes through the shading member, and has opposite ends fastened to the fixing device and the bottom rail. 
     
     
       10. The window covering of  claim 1 , further comprising a cord fastener received in the headrail to fasten or release the control section of the cord. 
     
     
       11. The window covering of  claim 1 , wherein the frame is provided with a separating member between the lift sections of the cord.